分级加载推力桩的三参数算法拟合  

Matching of a laterally-loaded pile's performances under multi-stage loading with 3-parameter theory

作　　者：王金海[1] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《水运工程》2010年第9期117-123,共7页Port & Waterway Engineering

摘　　要：运用推力桩的三参数算法进行了一个分级加载推力桩的拟合计算与分析。拟合计算与分析的结果表明,变参数的理论思想使得三参数算法能较好地拟合各级荷载作用下推力桩的力学性能,将小水平力工况和极限荷载工况的拟合计算统一于一个理论、一个基本微分方程;拟合得到的各组参数值不仅较好地反映了相应工况下桩侧地基土的综合力学特征,而且各参数值的变化都与外荷载值有明显的相关性,揭示了随荷载变化桩-土间的相互作用关系,与客观物理事实吻合,从而使得推力桩的非线性连续拟合成为可能。A laterally-loaded pile＇s performances under multi-stage loading are matched with 3-parameter theory.The results show that the laterally-loaded pile＇s performance under any a stage loading can be accurately matched with 3-parameter theory,one theory and one differential equation.Every set of parameters＇values accurately show the mechanical behavior of foundation soil around pile under a particular stage loading.And every parameter＇s value varies with loading conditions.The regularity of their variation discloses the interaction between pile and soil and agrees with the nonlinear characteristics of soil.So the performance of a laterally-loaded pile under continuously varying loading can be matched with 3-parametr theory.

关 键 词：分级加载 推力桩 三参数算法 变参数 非线性连续拟合 

分 类 号：O39[理学—工程力学]